I saw Duffy at this year's Glastonbury. Whilst I wouldn't deny that she sings well, overall I found her performance disappointing. Whether it was inexperience or nerves (she was on the other stage which is still enormous), she didn't seem to know what to say. "How you doing Glastonbury" wears a bit thin after a few times.
I would see her again but would be reluctant unless it was in a more intimate venue. I'd hope she'd be more relaxed there.

I think Duffy suits a more intimate venue very well. I particularly liked the one she did from a church shown on television recently.

Event Date: December 9, 2008
Event Venue: brixton

Duffy was brilliant. She has a great voice and and a charming stage presence. It is amazing to think that a year ago she was helping in her dad's pub on bingo nights. She had a large supporting band were really good and the synchronous Walker sisters. She did all of Rockferry, minus I think I'm scared.  At the end she had the crowd begging for Mercy.